D with stroke

Đ (lowercase: đ, Latin alphabet), known as crossed D or dyet, formed from base character D/d overlaid with a crossbar. Crossing was used to create eth (ð), but eth has an uncial as its base whereas đ is based on the straight-backed roman d. Crossed d is a letter in the alphabets of several languages and is used in linguistics as a phonetic symbol.

In the lowercase, the crossbar is usually drawn through the ascender, but when used as a phonetic symbol it may be preferred to draw it through the bowl, in which case it is known as a barred d.[1] In some African languages' orthographies, such as that of Moro, the barred d is preferred.[2]

In the uppercase, the crossbar normally crosses just the left stem, but in Vietnamese and Moro it may sometimes cross the entire letter.[3]

Ligature DE.

The DE ligature should not be confused with the Đ. That ligature was used stylistically in pre-19th century Spanish as a contraction for de, as a D with an E superimposed. For example, Universidad DE Guadalajara.

A lowercase đ appeared alongside a lowercase retroflex D in a 1982 revision of the African reference alphabet. This revision of the alphabet eliminated uppercase forms, so there was no conflict between ɖ and đ.

Đ was used in Medieval Latin to mark abbreviations of words containing the letter d. For example, hđum could stand for heredum "of the heirs". Similar crossbars were added to other letters to form abbreviations.[4]

The crossed d is a distinct letter, and is placed between Dž and E in alphabetical order. Its Cyrillic equivalent is Ђ ђ. Its partial equivalent in Macedonian is Ѓ ѓ (because only some dialects contain the /dʑ/ sound). When a true đ is not available or desired, it is transcribed as dj in Serbo-Croatian, and as gj in Macedonian. The use of dj in place of đ used to be more common in Serbo-Croatian texts, but is now considered obsolete and discouraged by style guides.

A page from the đ section of de Rhodes's Dictioniarum Annamiticum, a 1651 Vietnamese-Portuguese-Latin dictionary. As with the B with flourish, Đ only appears in lowercase in de Rhodes's works.

Đ is the seventh letter of the Vietnamese alphabet, after D and before E.[6] Traditionally, digraphs and trigraphs like CH and NGH were considered letters as well, making Đ the eighth letter.[7]Đ is a letter in its own right, rather than a ligature or letter-diacritic combination; therefore, đá would come after dù in any alphabetical listing.

Another letter written with the symbol đ is completely different than our own and is pronounced by raising the tip of the tongue to the palate of the mouth, immediately removing it, without in any way touching the teeth, for example đa đa: partridge. And this letter is very commonly used at the beginning of a word.

On older typewriters, Đ was located where Z would be in the French AZERTY layout.[13] Alternatively, a hyphen can be overstruck onto a D.

On computers without support for a Vietnamese character set or Unicode, Đ is encoded as DD and đ as dd according to the Vietnamese Quoted-Readable standard. Vietnamese computer users typically input Đ as DD in the Telex and VIQR input methods or as D9 in the VNI input method. In the absence of an input method, the TCVN 6064:1995 and Microsoft Windows Vietnamese keyboard layouts map ZA0-09 (0 on a U.S. keyboard) to đ, or Đ when holding down ⇧ Shift. The Windows layout also maps ZA0-11 (=) to ₫.

A minuscule form of the letter, đ, is the symbol of the đồng, the currency of Vietnam, by a 1953 decree by Ho Chi Minh.[17] The South Vietnamese đồng, on the other hand, was symbolized "Đ.", in majuscule. In Unicode, the Vietnamese đồng symbol is properly represented by U+20AB₫dong sign, but U+0111đlatin small letter d with stroke is often used instead. In Vietnamese, the đồng sign is written after the amount in superscript, often underlined.

The uppercase eth (Ð) is also now used to symbolize the cryptocurrencyDogecoin. The idea originated in December of 2013 on the website Reddit when a user realized that the symbol wasn't currently being used for any other currency, and the community believed it was fitting for Dogecoin.[18]

Đ and đ are encoded in Unicode as U+0110 LATIN CAPITAL LETTER D WITH STROKE and U+0111 LATIN SMALL LETTER D WITH STROKE; in Latin-2, Latin-4 and Latin-10 as D0 and F0 respectively; and, in Latin-6 as A9 and B9 respectively. In PostScript they are Dcroat, Dmacron, Dslash, dcroat, dmacron and dslash. In Unicode, both crossed d and barred d are considered glyph variants of U+0111.[1]

Unicode has a distinct code point for the visually very similar capital eth, Ð, U+00D0, which can lead to confusion.

As part of WGL4, Đ and đ can be expected to display correctly even on older Windows systems.